Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements Of Comprehensive Income [Abstract]
Net Income	$ 121,457	$ 42,207	$ 68,271
Other Comprehensive Income (Loss)
Change in Fair Value of Derivative Instruments	2,449	1,459	1,527
Less: Reclassification Adjustment for Change in Fair Value of Derivative Instruments Included in Net Income	(610)	(1,567)	(1,509)
Other Comprehensive Income (Loss), Net of Tax, Total	1,839	(108)	18
Comprehensive Income	123,296	42,099	68,289
Less: Comprehensive Income Attributable to Noncontrolling Interests	(4,567)	(411)	(1,016)
Less: Preferred Distributions	(17,380)	(14,356)	(14,356)
Less: Extinguishment of Issuance Costs Upon Redemption of Series B Preferred Shares	(4,021)
Comprehensive Income Attributable to Common Shareholders	$ 97,328	$ 27,332	$ 52,917